Baking oven



Mmmm 1925. 1

W. H. BEANES BAKING ovEN Filed Hay 12, 1924 Fig.2

Patented Mar. 10, 1925.

UNITED STATI-as PATENT OFFICE.

WARWICK HENRY BEANES, F LONDON, ENGL-AND, ASSIGNOR TO BAKER-PERKINS COMPANY INCORPORATED, OF WHITE PLAINS, NEW YORK.

BAKING OVEN.

Application filed May 12, 1924. Serial No. 712,879.

To all whom it may concern:

Be it known that I, WARWICK HENRY BEANES, a British subject, residing at Kingsway House, Kingsway, London, W.

C. 2, England, have invented certain new and useful Improvements Relating to Baking Ovens, of which the following is a specification.

' This invention relates to baking ovens,

for bread making and other purposes, of the type comprising steam pipes or tubular heating elements which are disposed above and below the sole or baking surface or to give top and bottom heating eects within l5 the oven. v

The object of the invention is to give oontrol and means for the variation of such top and bottom heating to meet the exigencies or requirements of baking.

The invention comprises the combination with an oven having a plurality of independent furnaces, of groups of tubular heating elements extending over or serving the oven or baking chamber or a portion or region of the same, the proportion of top to bottom tubes varying in the respective groups each of which receives heat from a different furnace, and the arrangement being such that by firing one furnace a certain ratio is obtained between the top and bottom heating or baking effects in the oven and by firing another furnace a different ratio. Variations of the heating or baking effects may also be obtained bya5 variation of the intensity of combustion in the different furnaces by adjustment of the dampers or the like.

Referring tothe accompanying sheet of explanatory drawings Figure 1 is an elevation, partly in section, and Figure 2 a sectional plan of an oven having my invention applied thereto.

The same reference letters in the two views indicate the same or similar parts.

In the illustrated application of the invention the baking oven is of the travelling sole plate or endless conveyor type and has six furnaces, provided along one side of the exterior of the oven a. The travelling sole u late or endless conveyor is lettered b in gigure 1. The steam pipes or tubes which project into the said furnaces or lire grat-es and extend within the baking chamber a are arranged so that whilst the group (c) associated with one furnace, which is numbered 1 in the drawing, has a preponderance of tubes giving ,bottom heat, in the grou d associated with lj'thenext or number 2 r'- nace there is a preponderance or greater ratio of tubes giving top heat, and so on throughout the series of furnaces numbered 1 to 6. In the oven or chamber a the pipes from the respective pairs of furnaces are mingled or extend over the same portion or region of the oven. Thus, the group of pipes or tubes c from the furnace 1 intermingle with those of the group d from furnace 2. Fcr clearness of illustration the pipes of groups c are shown by full lines and those of group d .by dotted lines. A similar differentiation has been made in the illustration of the groups from the other two pairs of furnaces, viz 3 and`4 and 5 and 6. Only two tubes are shown in each of the groups associated with the furnaces, 3, 4, 5 and 6; in all cases however, the number of tubes employed is determined by the requirements of the service for which any particular oven is built.

By working number` '1 furnace at full capacity and number 2 at a less intensity, or not at all, the proportion of bottom heat will be greater than the top heat'in the region served by the tubes receiving heat from or associated with those furnaces. Similarly, by firing number 2 ata greater rate or intensity than number 1 there will be a preponderance of top heat in the said region. The same variation may be obtained in the remainder of the oven or baking chamber by variation in the `firing of the respective furnaces, thus giving great exibility in control and enabling the ratios between top and bottom heating to be readily varied as desired.

The pipes or tubes may be of the stopped end or other types. and the furnaces adapted for burning solid, liquid or gaseous fuel.

The invention is not limited to ovens with travelling soles but may be used with drawplate or peel ovens.

Having thus described my invention what' I claim as new and desire to secure by Letters Patent is 1. In baking ovens, the combination comprising a baking chamber, a series of independent `furnaces disposed alongside the said chamber, a group of tubular heat transmitting elements associated with each furnace for the heating of a particular region of the said chamber, the saidI group whereby the said tubular heat transmitting of elements from each furnace in the seelements provide varyin heating effects ries being intermin led with the group from at the top and bottom o the oven, as set 10 another furnace o the series in the same forth. 5 region of the chamber as set forth. In testimony whereof I have signed my 2. In' baking ovens having the combinaname to this s ecification. tion claimed in the preceding claim, means WARVSICK HENRY BEANES. 

